Although There Are Many Definitions and Explanations About the Concept

Although there are many definitions and explanations about the concept of temperament, theorists tend to agree about 2 points. What is one of these?

A) Theorists focus on the 3 concepts of easy, difficult, and slow-to-warm up.
B) Theorists agree that temperament is stable across the lifespan.
C) Theorists agree that a primary feature of temperament is the child's positive or negative reaction to environmental stimuli.
D) Theorists agree that a primary feature of temperament is the recognition of causal schemes.